| Acronym | Meaning |
| NDDO | Neglect Of Diatomic Differential Overlap |
| TRAMP | Terrestrial Radioactivity Monitoring Programme |
| ICT | Intramol. Charge Transfer |
| TSE | Transmissible Spongiform Encephalopathies |
| ISPGAA | In Situ Prompt Gamma-ray Activation Analysis |
| CBS | Complete Basis Set |
| SNMS | Sputtered Neutral Mass Spectrometry |
| NQCC | Nuclear Quadrupole Coupling Constants |
| UCAS-SCF | Unrestricted Complete Active Space Self-consistent Field |
| CELRF | Canadian Environmental Law Research Foundation |